FEATURES:High Quality Material, Health and Environmental Protection.Waterproof, non-slip, Noise reduction.Easy Assembly, can be assembled and disassembled freely at any time.Easy to clean, can easily wipe off any spilled water or sweat.SPECIFICATION:Material: High Density EVAShape: SquareColor: BlackSize: 60 x 60 x 2.5cm/23.6 x 23.6 x 0.98inchMatching: 4/6/8/9/10/12/18/20 (PCS) Exercise matsWeight: 2.5/3.7/5/5.6/6.2/7.4/9.9/12.4 (kg)ABOUT SMELL:Since the goods are in a fully enclosed package, there will be residual odors. However, please rest assured that it is safe. After receiving the product, please place it in a ventilated place to eliminate the smell.ABOUT BUBBLES:Our products are made by high-temperature foaming at one time, and slight pores and indentations on the back are normal.NOTE:1. Due to different measurement methods, the error is generally 1-3cm, and the error range is not within the quality range.2. Since manual measurement is required, please leave a distance of 1-2 cm.3. If you encounter any problems during use, please send us an email and we will be at your service at any time.